We grabbed your fan questions off Twitter and hit up Horowitz and Kitsis for a quick round of scoop, in which the producers had the option to answer, "Yes," "No" or "Can't Answer." Some of their answers, and possible non-answers, are pretty telling, so check them out below:

Did you always know that Peter Pan (Robbie Kay) would be Rumple's (Robert Carlyle) father? Edward Kitsis: Yes, and if you re-watch all the episodes and their scenes together this season, you will see the buried hints sprinkled, including in Episode 4 when they come into the campfire and he says, "Now isn't this a family reunion."

Will we ever see how Michael (James Immekus), John (Matt Kane) and Wendy (Freya Tingley) tried to defeat Pan in the past? Kitsis: Perhaps someday.Adam Horowitz: Maybe.

Will we see what's happening to Rumple in Pandora's Box? Kitsis: No.

Will we find out more about the origin of Henry's (Jared Gilmore) storybook this season? Kitsis: Yes. Horowitz: And the first at it is soon.

Will Snow and Charming (Josh Dallas) find out about Neal (Michael Raymond-James) sending Emma to jail? Horowitz: Neal sending Emma to jail comes up again and is dealt with.

Will we see more of Robin Hood (Sean Maguire) and Regina (Lana Parrilla) and how her decision not to meet him affected them both? Horowitz: Yes.

Is there a connection between Tinker Bell (Rose McIver) and Belle (Emilie de Ravin)? Horowitz: Other than their names rhyming, they're not part of the Bell family. That's a clever idea, but that's not the case.

Emma's heart could not be ripped out. Could Henry's because he did it himself? Kitsis: Yes.

Will Henry ever learn that his mom Regina erased his memory after she told him of her plan to let everyone else die? Horowitz: Can't say.

Can a shadow be reattached to its host? Kitsis and Horowitz: Yes.

Will we see more curses explored on the show? Kitsis: Yes.

Will more worlds be explored in the second half of the season? Horowitz: Yes.

Will there ever be a musical episode on Once Upon a Time? Kitsis: Who knows?Horowitz: Never say never. We have no immediate plans. Kitsis: We tried to do one for Comic-Con, but it become cost-prohibitive.